FCC Week 2015
Marriott Georgetown Hotel
This first Annual Meeting of the Future Circular Collider study is an important milestone to conclude the first, exploratory phase, leading to the identification of the baseline for the further study. Organized as an IEEE conference, it will provide the opportunity for re-enforcing the cohesion of the community and to catalyse cross-fertilization within the FCC study.
This meeting also constitutes the preparatory event of the EuroCirCol H2020 project, which has been approved by the EC on January 28th, 2015. Dedicated working groups on schedule, communications and gender equality will be organised and the governance bodies will be compiled at the occasion.
The event will follow the traditional layout of plenary and parallel sessions with invited contributions. Plenary sessions will give an overview about the ongoing activities across all parts of the study and serve informing study members about the main boundary conditions and working hypothesis. Parallel sessions will focus on specific areas of the study and a limited number of contributed 10’ presentations are foreseen, to enable communication of key findings of ongoing work with significant impact on the subsequent study phases in an efficient way. We encourage submission of proposals which will be reviewed by the organising committee.
Satellite meetings for related projects and governance bodies will be included the program. Participation of industry is highly encouraged and supported via a dedicated industry track and a micro exhibition, focusing on superconducting cable technology. Communication and equal opportunity aspects will be addressed in dedicated working group meetings.
Plenary and parallel session contributions are by invitation only.
An open scientific fast track provides the opportunity to present findings of ongoing work with significant impact on the further study and of high importance to the FCC study community.
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Industrial Participants:
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15:00
Registration
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15:00
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07:00
Breakfast for all FCC participants
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Convener: Fabiola Gianotti (CERN)
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Speaker: Michael Benedikt (CERN)
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10:15
Coffee break
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Plenary Session: Overview on experiments studies hh, ee, he¶ ROOM A
ROOM A
Marriott Georgetown Hotel
Convener: Nigel S. Lockyer (FNAL)-
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Speaker: Patrick Janot (CERN)
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Speaker: Daniel Schulte (CERN)
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Speaker: Frank Zimmermann (CERN)
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12:15
Lunch break
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Convener: Bruce Strauss (U.S. Department of Energy)
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Speakers: Erk Jensen (CERN), Luca Bottura (CERN)
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Speaker: Jose Miguel Jimenez (CERN)
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15:15
Coffee Break
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Plenary session: Infrastructures; Common physics SW and simulations; Computing¶ ROOM A
ROOM A
Marriott Georgetown Hotel
Convener: Roberto Tenchini (Universita di Pisa & INFN)-
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FCC infrastructure & operation studies: progress and outlook¶ ROOM A
ROOM A
Marriott Georgetown Hotel
Speaker: Philippe Lebrun (CERN) -
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Speaker: Benedikt Hegner (CERN)
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17:15
Teatime
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Plenary session: European strategy and CERN; US activities related to future colliders¶ ROOM A
ROOM A
Marriott Georgetown Hotel
Convener: Prof. Akira Yamamoto (KEK)-
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Speaker: Frederick Bordry (CERN)
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Speaker: James Siegrist (D)
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19:00
Welcome reception
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07:00
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07:00
Breakfast for all FCC participants
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Convener: Andrei Seryi (JAI)
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Convener: Lucie Linssen (CERN)
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Convener: Andrew Hutton (JLAB)
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09:50
Coffee break
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10:00
Coffee Break
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Convener: Swapan Chattopadhyay (NIU/FNAL)
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Convener: Albert De Roeck (CERN)
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Summary of electroweak precision measurements¶Speaker: Prof. Doreen Wackeroth (SUNY Buffalo)
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Electroweak radiative corrections and alpha_EM(mz) determinations¶Speaker: Sbyszek Was (Krakow)
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QED and EW and hadronic corrections for Bhabha event generators¶Speaker: Janusz Gluza (Silesia Univ.)
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Discussion¶
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Convener: Peter Mcintosh (SFTC)
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Past, present and future prospects of SRF ingot niobium technology¶Speaker: Ganapati Myneni (ISOHIM)
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12:00
Lunch Break
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Convener: Mei Bai (Forschungszentrum GmbH)
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Convener: Enzo Palmieri (LNF-INFN)
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Ultraefficient superconducting RF cavities for FCC¶Recent Fermilab discoveries of nitrogen doping and effective magnetic flux expulsion allow quality factors in bulk niobium SRF cavities several times higher than the previous state-of-the-art from only two years ago. The combined approach using both of these techniques allows to minimize both residual and BCS surface resistances leading to the world-record quality factors of >2e11 corresponding to surface resistance of <1.5 nOhm up to the highest fields of 20+MV/m. Possibility of such high quality factors holds the potential to dramatically decrease a dynamic heat load and affect the choice of the optimal operating temperature of FCC. In this contribution I will briefly review these recent developments and outline their potential impact on the design of FCC. The plans for Fermilab Nb3Sn SRF cavity work for future 4.2K industrial (and potential FCC) applications will be discussed as well.Speaker: Alexander Romanenko (FNAL)
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Advances in development of diffused Nb3Sn cavities¶Recent advances at Cornell University in the development of Nb3Sn cavities have demonstrated the huge potential of this alternative material for very high efficient SRF acceleration. Nb3Sn has a critical temperature of 18 K, approximately twice that of niobium, allowing Nb3Sn cavities to have exceptionally high intrinsic quality factor Q0—which indicates extremely small cryogenic dissipation—at a given temperature. Single cell 1.3 GHz cavities now reach medium fields with quality factors Q0 above 1E10 at 4.2K, with the potential of exceeding 4E10 at 4.2K with reduced residual resistance. At a lower RF frequency of 800 MHz, quality factors at 4.2K in the 1E11 range are possible, making Nb3Sn a very attractive option for the SRF cavities in the FCC.Speaker: Matthias Liepe (Cornell Univ.)
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15:00
Coffee Break
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15:00
Coffee Break
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15:10
Coffee break
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Convener: Nikolai Mokhov (Fermi National Accelerator Lab. (US))
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Interaction region design¶The FCC experimental insertion region design is critical for achieving the required luminosity and to control the beam background conditions for the FCC experiments. The main goal of the starting design work is to optimise the luminosity per beam current to ensure that beam induced radiation does not compromise the experiments or affect collider operation. The design work will aim to achieve the following objectives: a) develop a baseline conceptual design of the IR, consistent with machine and detector requirements; b) specify functions and key performances of key beamline elements; c) develop a machine detector interface concept. The core design activity, within the EU funded design study, will be performed by collaboration of JAI/Oxford, STFC and Cockcroft Institute/Manchester, INFN, EPFL and CERN, in close collaboration with JAI/RHUL and many other partners. The particular design tasks of IR work package include a) development of the interaction region lattice (led by JAI/Oxford); b) design of machine detector interface (led by STFC/CI/Manchester); c) study of beam-beam interaction (led by EPFL). In this talk, after brief overview of FCC IR design goals, we will discuss the planned design approaches and present status of the work for the three components IR optical lattice, MDI and beam-beam effects. We will present the teams engaged into the study, describe their past relevant experience, available design tools, and relevant plans for team development and expansion needed for fulfilling the planned activities.Speaker: Andrei Seryi (JAI)
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FCC-hh as a heavy-ion collider¶Like the LHC, the FCC-hh could provide nucleus-nucleus and proton-nucleus collisions at unprecedented energies of 38.5 and 62 TeV per colliding nucleon pair. First studies have shown that an efficient new collider regime with emittance evolution governed by strong synchrotron radiation damping can be fully exploited to yield high integrated luminosity, even using the present LHC Pb beams. Upgrades to the heavy-ion injectors require further study but could yield still higher performance. If foreseen from the beginning, the modifications to the collider rings seem modest: certain requirements on the RF and beam instrumentation and some additional collimators. The advantages of switching from lead to other species are discussed. Requirements for further work are outlined.Speaker: John Jowett (CERN)
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Convener: Erk Jensen (CERN)
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17:00
Teatime
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Conveners: Frank Zimmermann (CERN), Genevieve Guinot (CERN)
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Convener: Michael Benedikt (CERN)
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Convener: Luca Bottura (CERN)
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07:00
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07:00
Breakfast for all FCC participants
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High Field SC Magnets: Machine Configuration & Magnet Specifications¶ ROOM C
ROOM C
Marriott Georgetown Hotel
Convener: GianLuca Sabbi (LBNL)- 87
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Convener: Abid Patwa (Brookhaven National Laboratory (US))
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Convener: Katsunobu Oide (KEK)
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Lattice optimization and emittance tuning¶Speaker: Bastian Harer (KIT - Karlsruhe Institute of Technology (DE))
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IR designs & dynamic aperture¶FCC-ee is an electron positron collider in the range of 90 GeV to 350 GeV central mass energy. Collider’s usual goal of achieving maximum luminosity is hindered by large amount of synchrotron radiation energy loss with chosen limit of 50 MWt per beam. The first part of the presentation compares three collision schemes: head-on (base line), small crossing angle with crab cavity, crab waist with respect to luminosity and necessary beam parameters. The second part describes interaction region lattice for crab waist collision scheme and discusses needed changes to make it suitable for other schemes. The lattice greatly depends on design of the final focus quadrupoles, therefore two possible solutions of the final focus quadrupole are presented. The third part shows results and recommendations of the dynamic aperture and energy acceptance studies of one quarter of the whole ring.Speaker: Roman Martin (Humboldt-Universitaet zu Berlin (DE))
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Synchrotron radiation in IR region SR + comment on BBREM (rad.Bhabha) lifetime¶Speaker: Helmut Burkhardt (CERN)
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10:00
Coffee Break
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Convener: Carmine Senatore (University of Geneva)
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Convener: Guido Emilio Tonelli (Universita di Pisa & INFN)
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Muon detection and identification challenges¶The design of the Muon Systems for FCC-hh poses interesting problems. Preliminary estimations of the background rate, and limits on the required time and space resolution, together with the necessary aging tolerance, are significantly more challenging that the ones foreseen for the experiments at HL-LHC. Given the requirements on the system that are presently known, it is difficult to think that one single detector technology can be successfully used everywhere in it. In this talk, the present technologies will be reviewed, trying to figure out which could be their possible evolution in the next twenty years, with a view to achieve those goals. Emphasis on the necessary synergies across R&D on different detector types will be put, and the relevant fields for a common effort outlined.Speaker: Marcello Abbrescia (INFN Bari)
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Digital Hadronic Calorimetry for e+e- and pp colliders¶Speakers: Burak Bilki (University of Iowa (US)), Yasar Onel (University of Iowa (US))
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Convener: Weiren Chou (FNAL)
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Impedance and collective effects¶Speaker: Mauro Migliorati (University of Rome "LA SAPIENZA")
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12:00
Lunch Break
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12:00
Lunch break
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12:30
Lunch break
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Convener: John Seeman (SLAC)
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Energy calibration options¶Speaker: Mike Koratzinos (Geneva Univ.)
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Conveners: Amalia Ballarino (CERN), Bruce Strauss (U.S. Department of Energy)
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Industry response to the FCC specifications (Bruker)¶Magnets currently discussed for the FCC require Nb3Sn conductors in extremely large quantities as well as performance levels that have never been produced before. Bruker supplies Nb3Sn strand made by the Powder-In-Tube (PIT-) approach for HEP magnet applications. For FCC, specifically dedicated R&D will be required to satisfy the ambitious specifications which are currently in preparation. Bruker will give an outlook on how conductor R&D can improve performance from state of the art towards the desired objectives.Speaker: K. Schlenga (Bruker)
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Industry response to the FCC specifications (Bochvar/TVEL)¶Speaker: Victor Pantsyrny (Bochvqar/TVEL)
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Industry response to the FCC specifications (SH Copper Products)¶Speaker: Katsumi Miyashita (SG Copper Products)
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Convener: Stephen Peggs (BNL)
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Concept of a Collimation System with Enhanced Operational Stability and Performance¶Speaker: Ralph Wolfgang Assmann (DESY)
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Focusing and Space Charge Compensation of Beams with Electron Columns¶Speaker: Kathrin Schulte (Institute for Applied Physics)
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Scaling behavior of circular colliders¶The natural next future circular collider is an e+e- Higgs Factory and, after that, a post-LHC p,p collider in the same tunnel. For now the single most important parameter is the ring radius R, since all other parameters can be established later. Using only scaling laws to exptrapolate from existing colliders, this paper investigates ring circumferences two, or three, or four times greater than LEP's. The paper shows that "bigger is better", both for e+e- and (obviously) p,p. For a radiation dominated collider like the Higgs Factory, and arguably also for FCC-pp, the luminosity is shown to depend on R and the rf power P only through their product RP. This makes it possible for the same tunnel circumference to be optimal for both e+e- and p,p, without much increase in initial cost. For example, doubling R, compared to what might be marginally adequate for single Higgs production, and cutting P in half, say from 50 MW to 25 MW. The increase in start up cost associated with the increase in R is largely compensated by the decrease in cost associated with the reduction in P. This is especially true for yearly power costs. Other scaling laws are also derived, and their luminosity implications discussed.Speaker: Richard Talman (Cornell)
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15:00
Coffee break
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Convener: Uli Wienands (SLAC)
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High Field SC Magnets: HTS and opportunities of FCC developments¶ ROOM C
ROOM C
Marriott Georgetown Hotel
Convener: Pierre Vedrine (CEA/IRFU,Centre d'etude de Saclay Gif-sur-Yvette (FR))- 129
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Synergy and impact of the FCC magnet technology R&D with NMR, MRI and high-field magnet science¶Speaker: Antoine Dael (CEA)
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Convener: Claire Gwenlan (University of Oxford)
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17:00
Teatime
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Convener: James Gillies (CERN)
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Breakout groups¶Speakers: Cristina Martin Perez (Universidad Complutense (ES)), James Gillies (CERN), Katie Yurkewicz (Fermi National Accelerator Lab. (Fermilab))
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Convener: Dr Ralph Wolfgang Assmann (DESY)
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Convener: Francis Perez (ALBA)
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The KEK photon beamline for desorption studies: preliminary results and plans for future studies in the FCC hh context¶Speaker: Yasunori Tanimoto (KEK)
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Present and future surface modifications for the mitigation of electron clouds in cryogenic beam vacuum systems¶Speaker: Reza Valizadeh (STFC)
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Potential countermeasures against the very large SR heat load in FCC-hh (Contributed talk)¶Speaker: Roberto Cimino (LNF-INFN)
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20:30
Workshop Banquet
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07:00
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07:00
Breakfast for all FCC participants
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Convener: Yasunori Tanimoto (KEK)
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Potential countermeasures against the very large SR heat load in FCC-hh (contributed talk)¶Speaker: Roberto Cimino (Istituto Nazionale Fisica Nucleare Frascati (IT))
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Potential reduction of the beam impedance by using HTS coating technology (incl. FCC hh compatibility issues)¶Speaker: Gennady Stupakov (SLAC)
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Physics & Phenomenology: Discovery via precision EW/Higgs/flavour physics¶ ROOM D
ROOM D
Marriott Georgetown Hotel
Convener: Jonathan R. Ellis (CERN)- 168
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10:00
Coffee Break
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Conveners: Giorgio Apollinari (FNAL), Dr Peter Wanderer (BNL)
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Convener: Christoph Haberstroh (TU Dresden)
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Convener: Egbert Fischer (GSI)
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Convener: Dmitri Denisov (Fermi National Accelerator Lab. (US))
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12:00
Lunch Break
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Physics & Phenomenology: (In)direct probes of the high-mass frontier¶ ROOM D
ROOM D
Marriott Georgetown Hotel
Convener: Raman Sundrum (University of Maryland) -
Convener: Tatsushi Nakamoto (KEK)
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Convener: Ralf Trant (CERN)
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Control concepts for future circular accelerators: why it is not to early to speak about them¶Speaker: Philippe Gayet (CERN)
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Lessons learnt and new concepts for conventional safety in FCC¶Speaker: Andre Henriques (CERN)
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Optimised civil engineering layout for radiation protection in FCC¶Speaker: Markus Widorski (CERN)
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Discussion¶
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Beam Dump & Collimators: Materials & Engineering Breakthroughs¶ ROOM A
ROOM A
Marriott Georgetown Hotel
Convener: Olivier Brunner (CERN) -
15:00
Coffee Break
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Convener: Stephen Gourlay (LBNL)
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Convener: Roy Aleksan (CEA/IRFU)
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Trigger and data acquisition challenges and possible technology evolution over the next two decades¶Speaker: Wesley Smith (University of Wisconsin)
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Performance requirements for Hadron Calorimeters¶Speaker: Sergei Chekanov (Argonne National Laboratory (US))
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Beam losses and collision debris studies in Europe¶Speaker: Maria Ilaria Besana (CERN)
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Convener: Mar Capeans Garrido (CERN)
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Architecture of powering and protection systems for high field circuits¶Speaker: Andrzej Siemko (CERN)
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17:00
Teatime
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Convener: Ken MARKEN (U.S. Department of Energy)
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Review of the LARP program¶Speaker: Giorgio Apollinari (Fermi National Accelerator Laboratory (FNAL))
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US R&D activities and plans in SCRF and RF power source efficiency¶Speaker: Sergey Belomestnykh (Brookhaven National Laboratory)
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US HEP community perspective on future circular colliders¶Speaker: Andrew James Lankford (University of California Irvine)
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216
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07:00
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07:00
Breakfast for all FCC participants
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Plenary: Summaries: FCC-hh and FCC-ee collider; infrastructures; technologies; magnets; RF¶ ROOM A
ROOM A
Marriott Georgetown Hotel
Convener: Frederick Bordry (CERN)-
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Summary FCC-hh and FCC-ee collider¶Speakers: Michael Syphers (Michigan State University), Uli Wienands (SLAC National Accelerator Laboratory)
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10:30
Coffee break
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Plenary: Summaries: Physics & phenomenology; Experiments hh, ee, he¶ ROOM A
ROOM A
Marriott Georgetown Hotel
Convener: Andrew James Lankford (University of California Irvine (US))- 225
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Experiments hh, ee, he¶Speakers: Alain Blondel (Universite de Geneve (CH)), Max Klein (Liverpool Univ.), Werner Riegler (CERN)
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Convener: Andrew James Lankford (University of California Irvine (US))
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12:45
Lunch break
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15:30
Coffee Break
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Convener: Michael Benedikt (CERN)
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FCC Steering Committee¶
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07:00